import cn.hutool.core.util.IdUtil;
import cn.hutool.core.util.NumberUtil;

import java.time.Duration;
import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;

public class UUIDtest {
    public static void main1(String[] args) {
        long zero = 0;
        System.out.println(zero == 0);
    }

    public static void main(String[] args) {
        System.out.println("abc,efs".contains("es"));
    }
}
